Real Estate and Loans Receivable - Summary of Status Update on Current Development Projects (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Business Acquisition [Line Items]
Original Commitment	$ 147,453
Costs Incurred as of December 31, 2013	41,771
Property First Choice ER- Nacogdoches [Member] | Location San Antonio, TX [Member] | Property Type Acute Care Hospital [Member] | Operator First Choice ER, LLC [Member]
Business Acquisition [Line Items]
Original Commitment	5,100
Costs Incurred as of December 31, 2013	2,681
Estimated Completion Date	1Q 2014
Property First Choice ER - Brodie [Member] | Location Austin, TX [Member] | Property Type Acute Care Hospital [Member] | Operator First Choice ER, LLC [Member]
Business Acquisition [Line Items]
Original Commitment	5,470
Costs Incurred as of December 31, 2013	1,950
Estimated Completion Date	2Q 2014
Property First Choice ER- Alvin [Member] | Location Houston, TX [Member] | Property Type Acute Care Hospital [Member] | Operator First Choice ER, LLC [Member]
Business Acquisition [Line Items]
Original Commitment	5,240
Costs Incurred as of December 31, 2013	1,328
Estimated Completion Date	2Q 2014
Property Northern Utah Rehabilitation Hospital [Member] | Location South Ogden, UT [Member] | Property Type Inpatient Rehabilitation Hospital [Member] | Operator Ernest Health, Inc. [Member]
Business Acquisition [Line Items]
Original Commitment	19,153
Costs Incurred as of December 31, 2013	16,391
Estimated Completion Date	2Q 2014
Property First Choice ER- Briar Forest [Member] | Location Houston, TX [Member] | Property Type Acute Care Hospital [Member] | Operator First Choice ER, LLC [Member]
Business Acquisition [Line Items]
Original Commitment	5,833
Costs Incurred as of December 31, 2013	1,386
Estimated Completion Date	3Q 2014
Property First Choice ER- Cedar Hill [Member] | Location Cedar Hill, TX [Member] | Property Type Acute Care Hospital [Member] | Operator First Choice ER, LLC [Member]
Business Acquisition [Line Items]
Original Commitment	5,768
Costs Incurred as of December 31, 2013	1,167
Estimated Completion Date	3Q 2014
Property First Choice ER- Firestone [Member] | Location Firestone, CO [Member] | Property Type Acute Care Hospital [Member] | Operator First Choice ER, LLC [Member]
Business Acquisition [Line Items]
Original Commitment	5,172
Costs Incurred as of December 31, 2013	544
Estimated Completion Date	3Q 2014
Property Oakleaf Surgical Hospital [Member] | LocationAltoona, WI [Member] | Property Type Acute Care Hospital [Member] | Operator National Surgical Hospitals [Member]
Business Acquisition [Line Items]
Original Commitment	33,500
Costs Incurred as of December 31, 2013	16,324
Estimated Completion Date	3Q 2014
Property First Choice Emergency Rooms [Member] | Location Various [Member] | Property Type Acute Care Hospital [Member] | Operator First Choice [Member]
Business Acquisition [Line Items]
Original Commitment	62,217
Costs Incurred as of December 31, 2013
Estimated Completion Date	Various